CHAPTER 1:

The wind blew gently across the hill behind Luna Aoki’s school.

She loved this quiet place. No students shouting, no cars honking—just the soft rustle of grass and the distant hum of the city.

Luna closed her eyes and let the breeze brush her face. Something deep inside her felt… awake, like the wind was trying to tell her a secret.

“Why does it feel like someone is calling me?” she whispered.

A soft creak broke the silence.

Her eyes snapped open.

In the middle of the hill, where there had been only grass moments before, stood a wooden door.

It looked old—ancient even—its surface cracked and faded, as if it had been waiting for centuries.

Luna’s heart skipped a beat.

“W-what…?” she murmured.

Before she could reach out, a voice said from behind:

"Don't touch it."

She spun around. A tall boy with black hair stood a few steps away. His eyes were calm, almost cold, and they seemed to pierce right through her.

“I… who are you?” Luna asked, her voice trembling slightly.

The boy didn’t answer immediately. He walked toward the door, resting a hand gently on its surface. The wood hummed under his touch, and the air shimmered.

“You shouldn’t be here,” he said finally.

“But… why is there a door here?” Luna asked, stepping closer.

The boy’s eyes softened for a brief moment, then hardened again. “Some doors are not meant for ordinary people. You should forget this ever existed.”

Luna’s curiosity flared. “I can’t just ignore it…”

The boy sighed, as if tired of explaining. “My name is Haru. And if you value your normal life, you will walk away now.”

Luna hesitated, her hand hovering near the door. She could feel something—warm, inviting, and alive—calling her closer.

The wind picked up suddenly, swirling around her, tugging at her hair and clothes. The door creaked open on its own, spilling golden light across the grass.

Her breath caught in her throat.

“It’s… beautiful,” she whispered.

Haru’s eyes flicked to her, sharp and protective. “It’s dangerous. Stay back.”

But even as he spoke, Luna felt drawn forward, as if some unseen force was pulling her toward the door—and toward him.

And for the first time, she realized that her quiet life was about to change forever.

The golden light from the door stretched across the hill like a ribbon of sunlight. Luna felt it humming softly, almost like it had a heartbeat of its own. Her fingers twitched, itching to touch the glowing surface, but she hesitated, sensing the strange power radiating from it.

Haru’s hand rested lightly on her shoulder. “If you step through, everything changes,” he said, his voice calmer now, tinged with something she couldn’t name—concern, maybe, or… care.

“I don’t care,” Luna whispered, a strange excitement bubbling in her chest. “I feel like I’m supposed to see this. I… I have to know what’s beyond.”

Haru studied her in silence, the wind tugging at his dark hair. He looked conflicted, as if he were battling something inside himself. Finally, he gave a slow nod. “Then I’ll go with you. But promise me—you won’t wander alone.”

“I promise,” she said, gripping the edge of the door with a mixture of fear and anticipation.

The wind rose, stronger now, wrapping around them and carrying with it the faint scent of flowers she couldn’t recognize. The door creaked open wider, and Luna glimpsed a world bathed in soft, golden light: islands floating in the sky, streams of glowing water, and ruins that shimmered as if made of crystal. She felt her heart leap.

“Is this… real?” she whispered, turning to look at Haru.

Haru’s eyes softened, almost imperceptibly. “It’s real,” he said, his usual cold tone replaced by quiet certainty. “But real doesn’t mean safe.”

A shiver ran down her spine. The adventure, the magic, the unknown—it all waited for her beyond that door. And somehow, she felt that stepping through it would change not just her world, but the boy beside her as well.

Taking a deep breath, Luna stepped forward. The golden light wrapped around her like a warm embrace. Haru followed, silently guiding her. And as they crossed the threshold together, the hill, the school, and everything she had known faded behind them.

The adventure had truly begun.

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